/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --accent: #0ea5e9;
      --accent-green: #0d9488;
      --bg-main: #ffffff;
      --bg-alt: #f8fafc;
      --bg-muted: #f1f5f9;
      --text-heading: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-card: 1rem;
      --shadow-soft: 0 10px 25px -5px rgba(30, 64, 175, 0.05), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-main);
      overflow-x: hidden;
    }
    .hero-bg-cover {
      background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(240, 249, 255, 0.9) 100%), url('/assets/images/06f74ea6083eb308.webp');
      background-size: cover;
      background-position: center;
    }
    .dark-showcase-bg {
      background-image: linear-gradient(180deg, rgba(15, 23, 42, 0.98) 0%, rgba(30, 41, 59, 0.96) 100%), url('/assets/images/afec7a9b9625d743.webp');
      background-size: cover;
      background-position: center;
    }
    .custom-card {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-soft);
      transition: all 0.3s ease;
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(30, 64, 175, 0.12);
      border-color: #cbd5e1;
    }
    .badge-gradient {
      background: linear-gradient(90deg, #eff6ff 0%, #e0f2fe 100%);
      border: 1px solid #bfdbfe;
    }
    .btn-gradient {
      background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
      transition: all 0.25s ease;
    }
    .btn-gradient:hover {
      box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.4);
      filter: brightness(1.05);
    }